The activated carbon filter could be used in air filtration such as Formadehyde&comma; Ammonia&comma; Benzene&comma; TVOC&comma; absorb the Iodine&comma; Carbon Tetrachloride&comma; clear the smell of air or liquids polution&period; Its application that suitable for automotive&comma; acgriculture&comma; industry&comma; medical&comma; air purifier etc&period;